221–230 of 363 posts
It's always interesting to see East Africans doing so well. Even with technology like advances in shoes and diet/training, genetics is still a huge factor. Also it must be an crazy feeling to be Kejelcha, the guy who came in 2nd place. It would have been a world record, except for Sawe!
Not necessarily genetic. They run a lot, at altitude, from childhood
Posted to my in-laws, who asked how: Super shoes. Most shoes have carbon plates in them now, they act as a spring, storing energy and propelling athletes forwards. Better understanding of fuelling. Most athletes are taking between 100-120g carbs (sugar) per hour. Bicarbonate of soda has also been effective. Better planning tools. Athletes look at elevation, headwind, tailwind and will plan a strategy around going har…
> going harder into the hard stuff and knowing when they can back off and rest. Why is going harder in the hard stuff and easier in the easy stuff more efficient or faster than vice versa? I imagine arguments either way: Going harder when it's easy gives you higher ROI. Or maybe going easier when it's hard is just too slow. And maybe that is too simplistic: Maybe it depends on how hard; that is, maybe there is a thre…
Wind drag goes up with v squared, so power required goes up with v cubed.
If you run at 105% speed downhill,that requires almost 16% more power to overcome wind drag. You might be better off running at 100% speed downhill (and "saving" that 16% power), and pushing harder to run as close as you can to 100% speed on the uphill stretches that would otherwise have you running slower than 100%. The power used to increase your potential energy going uphill is "zero sum" because you get it back when you go back downhill -n there no pesky v squared or v cubed non linearity there (assuming the race starts and finishes at the same elevation).
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> could absorb and burn 100 calories per hour burning a hundred calories an hour is trivial. Most people will burn 100 calories per mile when walking or running, and more if moving as fast as these athletes, and many, many humans can do this for far, far longer than 2 hours. It's the absorbtion that's the challenge. Maurten is not somehow alone in the particular stuff they've developed - ultra runners are generally s…
I've read that even if you absorb it all, there's some question about whether it's useful. This Alex Hutchinson article suggests, among other things, that it may spare your fat stores rather than your muscle glycogen: > Even if you can absorb 120 grams per hour, it might not make you faster. In Podlogar’s study, cyclists burned more exogenous carbs when they consumed 120 rather than 90 grams per hour, but that didn’t…
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Was the barefoot movement ever about running faster? I always thought they sold injury prevention by strengthening tissues that running shoes tend to over support.
Yes, that was the claim but it was never really backed by evidence. Vibram settled a lawsuit over false claims that their minimalist shoes reduced the risk of injuries. (I still like those shoes myself and use them on some slow recovery runs.) https://www.bbc.com/news/business-27335251
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Maybe even placebo effect?
So you think the Vaporfly prototypes Kipchoge wore in 2018 placebo'd him into crushing the world record by 78 seconds?
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The Adidas Adios Pro Evo 3 - https://news.adidas.com/running/adidas-unveils-its-first-sub... adidas introduces the Adizero Adios Pro Evo 3 – the lightest and fastest Adizero shoe ever, weighing an average 97* grams. The race-day shoe represents the culmination of three years of cutting-edge research. It is 30% lighter, delivers 11% greater forefoot energy return, and improves running economy by 1.6% compared to its p…
You can buy them in the UK soon, just £450 and I suspect they'll disintegrate quickly... https://www.adidas.co.uk/adizero-adios-pro-evo-3-shoes/KH767...
The other conditions as I recall are there is only allowed to be one carbon plate in them and a maximum stack height of 40mm.
It really is incredible that Nike kicked off this Supershoe arms race ten years ago and spent (presumably) an incredible amount on R&D, marketing and hype to try and complete the mission of being the first shoe to go Sub-2, and Adidas has pipped them at the last minute... twice in one race. Oh to be a fly on the wall at HQ today...
Though I assume they made a lot of that cash back in the interim selling these things to weekend warrior suckers like myself!
Posted to my in-laws, who asked how: Super shoes. Most shoes have carbon plates in them now, they act as a spring, storing energy and propelling athletes forwards. Better understanding of fuelling. Most athletes are taking between 100-120g carbs (sugar) per hour. Bicarbonate of soda has also been effective. Better planning tools. Athletes look at elevation, headwind, tailwind and will plan a strategy around going har…
When I was young everyone acted like running was all about who could endure misery the longest. I think if I had known about these aspects it would’ve seemed more strategic and interesting (especially with smart phones to help). Alas, these days all my effort is in making sure my run doesn’t kill my knees :\
Posted to my in-laws, who asked how: Super shoes. Most shoes have carbon plates in them now, they act as a spring, storing energy and propelling athletes forwards. Better understanding of fuelling. Most athletes are taking between 100-120g carbs (sugar) per hour. Bicarbonate of soda has also been effective. Better planning tools. Athletes look at elevation, headwind, tailwind and will plan a strategy around going har…
I thought those carbon plate shoes were barred from competition???
40mm stack height maximum One carbon plate only (some shoes were including a second). Must be on sale to the public for Puma makes a shoe that's non-compliant with the above (two plates, not sure about the stack height), for what it's worth.
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You can buy them in the UK soon, just £450 and I suspect they'll disintegrate quickly... https://www.adidas.co.uk/adizero-adios-pro-evo-3-shoes/KH767...
Much like the road bikes that cost as much as a sedan, unless you are competing on a world stage, these aren’t meant for you. I’m sure someone will happily sell them to you if you enjoy wasting money.
There’s a lot of people trying to get a 3 hour marathon or some other goal where chasing the marginal gains is worth the cost to them.
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I normally consume 90g of carbs per hour when long distance biking, so do a few other riders I know. No GI issues. I use Skratch some other guys like Precision.
Yeah, I just literally use table sugar, which is 1:1 glucose:fructose. Maurten et al using 1:0.8, close enough! And I don't believe the hydrogel thing is any magic, just marketing. But yeah, this is a thing. There is some gut distress for sure at higher levels of intake. See guy finishing second -- still under 2 hrs! immediately puking, which is fairly common at the high intakes. I've heard of Blumenfeld (the triathl…
But I only buy for actual races, rest of the time, I do my own 1:0.8 mix with a bit of thickener, in soft flasks. Much more cost effective.